IINA 1.2.0

Now IINA is shipped with a universal binary that run natively on both Intel and M1-based Macs.

Sorry for the slow update speed because I don't have much time to spend on IINA recently.

Apart from the universal binary, there is nothing changed from v1.1.2. Therefore, if you are using an Intel-based Mac, you may skip this update safely until we have prepared separate builds for different architectures.